Q. Simplify the expression to a+bi form:49−−200+81+−128Answer:
Given expression: Given expression:49−−200+81+−128Express the expression using i for the square roots of negative numbers.49−200i+81+128i
Express using i: Simplify the square roots of the positive numbers and express the square roots of the negative numbers in terms of i. 49−200i+81+128i = 7−102i+9+82i
Simplify and combine: Combine like terms to get the expression in a+bi form.7−102i+9+82i=(7+9)+(−102i+82i)=16−22i
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